I was just called by my favorite GM dealership about my 383 that was ordered. I need to come and pick it up. 3 year 50,000 mile warranty. I'm gonna use a TBI set up. GM has an intake that will work with the vortech heads and TBI. I've got to deal with the egr tube and a weld kit for the header tube and the intake manifold. Ooops...almost forgot...larger TBI...670 cfm...and a new computer chip for the correct fuel curve... All of this is a little pricey...about $4,200. But hey...would have spent it on something else anyway. Anyone want to come over hang around and turn a few wrenches with me? 1990 GMC Jimmy 350/TH700R4/NP241/10 bolts, 4" skyjacker lift, 35x12.50R15 BFG All Terrains on 15x10 AR Baja's, Flowmasters.